Television scan line doubler including temporal median filter
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United States of America Patent
Stats
-
Oct 30, 1990
Issued Date -
N/A
app pub date -
Feb 5, 1990
filing date -
Apr 5, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A television line doubler having a video pixel interpolator and a multi-component motion detector including at least one frame-recursive component for detecting a motion value in the area of the pixel to be interpolated. A second switch switches its output to an interpolated pixel time compression circuit in accordance with the detected motion value. The second switch and the motion detector provide a proportional switch with an onset at approximately 2 to 5 IRE units of motion value and operating in accordance with the absolute amplitude of the motion value. Full switchover to the intra-field interpolator means occurring at approximately 5 to 15 IRE units of motion value amplitude. The motion detector stretches the detected motion to a predetermined number of adjacent pixel location in the line domain and a recirculation loop enables a component of motion to be recirculated.
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Family
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Cited Art Landscape
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